310203121013 has 2 divisors, whose sum is σ = 310203121014. Its totient is φ = 310203121012.

The previous prime is 310203120979. The next prime is 310203121027. The reversal of 310203121013 is 310121302013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170343576529 + 139859544484 = 412727^2 + 373978^2 .

It is a cyclic number.

It is not a de Polignac number, because 310203121013 - 2²⁶ = 310136012149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 310203120982 and 310203121000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310203121093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155101560506 + 155101560507.

It is an arithmetic number, because the mean of its divisors is an integer number (155101560507).

Almost surely, 2^310203121013 is an apocalyptic number.

It is an amenable number.

310203121013 is a deficient number, since it is larger than the sum of its proper divisors (1).

310203121013 is an equidigital number, since it uses as much as digits as its factorization.

310203121013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 310203121013 its reverse (310121302013), we get a palindrome (620324423026).

The spelling of 310203121013 in words is "three hundred ten billion, two hundred three million, one hundred twenty-one thousand, thirteen".